Which numbers are irrational? Select the three that apply.

Question

√9
√169
Pi
√18
√78
9/15

Answer 1

To determine which numbers are irrational, let's first identify the values of each option:

1. √9 = 3 (which is rational)
2. √169 = 13 (which is rational)
3. Pi (π) is approximately 3.14159 and is known to be an irrational number.
4. √18 = 4.24264... (which is irrational, as it cannot be simplified to a fraction)
5. √78 = 8.83176... (which is also irrational)
6. 9/15 = 3/5 (which simplifies to a rational number)

The three numbers that are irrational in the provided list are:

• Pi
• √18
• √78